package Day08;

import java.util.Scanner;

public class Demo02 {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("请输入一个字符串" );
        String s=sc.nextLine();
        int bigCount=0;
        int smallCount=0;
        int numCount=0;
        for (int i = 0; i <s.length() ; i++) {
            char ch=s.charAt(i);
            if(ch>='a'&&ch<='z'){
                smallCount++;
            }else if(ch>='A'&&ch<='Z'){
                bigCount++;
            }else if(ch>='0'&&ch<='9'){
                numCount++;
            }
        }
    }
}
